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Power
DC Traction Substation Design Client: San Francisco Municipal Railway (MUNI)
To establish the power requirements for the yard, and the voltage profile for the trolley cars, a comprehensive Traction Power Study of the Metro East Facility was performed. The power study was performed using the Energy Management Model (EMM), developed at the Rail System Center of Mellon Institute at Carnegie Mellon University. The computer program Train Performance Simulator (TPS) uses all right of way and equipment characteristics (grades, curves, speed limits, stations, locomotives or power cars) and calculates electric power requirements for the traction equipment; in this case, trolley cars. The Electrical Network Simulator (ENS) uses the traction power system parameters (substation rating, feeder and catenary resistance, including negative return), and calculates all electrical parameters (power, voltage, current, and electrical losses), for the traction network. Services Provided:
Special Features:
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The Metro East Light Rail Maintenance and Operations Facility
is part of Muni's Third Street Light Rail Program. The
facility will be located on thirteen acres at 25th Street and
Illinois Street. The yard will be capable of storing 100 Breda
LRV-2 articulated cars. One dual 4,000 kw, 12Kv primary DC substation
will be built in the facility to provide traction power. Half
of the substation will provide traction power for the main line
tracks and the other half will provide traction power for the
yard. Also, a new 500 kw DC traction substation will provide
traction power for the shop.
